The Japan Aerospace Exploration Agency (JAXA) is conducting research and development on aircraft engine technologies to reduce environmental impact for the Technology Development Project for Clean Engines (TechCLEAN). As a part of the project, combustion technologies have been developed with an aggressive target that is an 80% reduction over the NOx threshold of the International Civil Aviation Organization (ICAO) Committee on Aviation Environmental Protection (CAEP)/4 standard. A staged fuel nozzle with a pilot mixer and a main mixer was developed and tested using a single-sector combustor under the target engine's landing and takeoff (LTO) cycle conditions with a rated output of 40 kN and an overall pressure ratio of 25.8. The test results showed a 77% reduction over the CAEP/4 NOx standard. However, the reduction in smoke at thrust conditions higher than the 30% MTO condition and of CO emission at thrust conditions lower than the 85% MTO condition are necessary. In the present study, an additional fuel burner was designed and tested with the staged fuel nozzle in a single-sector combustor to control emissions. The test results show that the combustor enables an 82% reduction in NOx emissions relative to the ICAO CAEP/4 standard and a drastic reduction in smoke and CO emissions.

References

References
1.
Penner
,
J. E.
,
Lister
,
D. H.
,
Griggs
,
D. J.
,
Dokken
,
D. J.
, and
McFarland
,
M.
, eds.,
1999
,
Aviation and the Global Atmosphere
,
Cambridge University Press
,
Cambridge, England
.
2.
European Aviation Safety Agency,
2012
, “
ICAO Aircraft Engine Emissions Databank
,” http://easa.europa.eu/environment/edb/aircraft-engine-emissions.php
3.
NEDO,
2012
, “
Research and Development for an Environment-Friendly Small Aircraft Engine, Outline of NEDO (New Energy and Industrial Technology Development Organization) 2008–2009
,” http://www.nedo.go.jp/kankobutsu/pamphlets/kouhou/2008gaiyo_e/all.pdf, pp.
35
36
.
4.
Lazik
,
W.
,
Doerr
,
Th.
,
Bake
,
S.
,
v. d. Bank
,
R.
, and
Rackwiz
,
L.
,
2008
, “
Development of Lean-Burn Low-NOx Combustion Technology at Rolls-Royce Deutschland
,”
Proceedings of ASME Turbo Expo 2008
, Berlin, June 9–13,
ASME
Paper No. GT2008-51115.10.1115/GT2008-51115
5.
Heidmann
,
J.
,
2010
, “
NASA's Current Plans for ERA Propulsion Technology
,”
NASA
, http://www.aeronautics.nasa.gov/pdf/asm_2010_heidmann%20v4x_508.pdf
6.
Japan Aerospace Exploration Agency,
2012
, “
Environmentally Compatible Engine Technology Team
,”
JAXA
, http://www.apg.jaxa.jp/eng/research/cet/cet-index.html
7.
Yamamoto
,
T.
,
Shimodaira
,
K.
,
Kurosawa
,
Y.
,
Matsuura
,
K.
,
Iino
,
J.
, and
Yoshida
,
S.
,
2009
, “
Research and Development of Staging Fuel Nozzle for Aeroengine
,”
Proceedings of ASME Turbo Expo 2009
, Orlando, FL, June 8–12,
ASME
Paper No. GT2009-59852.10.1115/GT2009-59852
8.
Yamamoto
,
T.
,
Shimodaira
,
K.
,
Kurosawa
,
Y.
,
Yoshida
,
S.
, and
Matsuura
,
K.
,
2010
, “
Investigations of a Staged Fuel Nozzle for Aeroengines by Multi-Sector Combustor Test
,”
Proceedings of ASME Turbo Expo 2010
, Glasgow, UK, June 14–18,
ASME
Paper No. GT2010-23206.10.1115/GT2010-23206
9.
Yamamoto
,
T.
,
Shimodaira
,
K.
,
Kurosawa
,
Y.
, and
Yoshida
,
S.
,
2011
, “
Combustion Characteristics of Fuel Staged Combustor for Aeroengines at LTO Cycle Conditions
,”
Proceedings of ASME Turbo Expo 2011
, Vancouver, Canada, June 6–10,
ASME
Paper No. GT2011-46133.10.1115/GT2011-46133
You do not currently have access to this content.